From https://gstreamer.freedesktop.org/src/gst-validate/gst-validate-1.12.2.tar.xz.sha256sum
sha256 6b7a25d1fd2a08ffe08e4809587f16b4c4e01dfd9e77cfa222b7f2558666fedd gst-validate-1.12.2.tar.xz
